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UNITED STATES PATENT f OFFICE.

MARK E. STOVER,

oF sAGiNAW,f1sneHIGAN, AssIeNoR for ONE-HALF 'ro- JOHNWM. HALL. oF SAMEPLACE.

LUBmcATo R.-

. SPECIFICATION forming part of Letters Patent 110.574,688, dated annary5, 1897.-"

' Application tiled september19.1396. serian. 606,372.` of@ man. Y"

.To all whom it may concern.:

l Be it known that I-,` MARK E. STOVER, a citizen o f the United States.of America., residingat Saginaw, East Side, i'n't-he county ofSagi--Cupsg naw and State of Michigan, have invented certain new. and usefulImprovements in Dope.- and I do hereby declare the following ,y lto be afull, clear, and exact descrptionof the invention, such as will enableothers skilled -in the art -to which it appertainsjto make and usethes'ame, reference being had to the ac- .companyiug drawings, and toletters of referencemarked thereon, which forma partof thisspeciiication.. Y v

The object offany invention is to provide adope-cup inV which -thfe.meehanism that produces the force feed of lthe dope or grease will bepositive in its action and may continue after the cup is empty withoutaffecting the operation of lthe parts, the construction alsocontemplati'ng the removal'of the cover in refill- 'ing the .cup withoutdisturbing the actuating mechanism, said 7 cover merely carrying thepiston and threaded piston-rod in'contradistinction to other devices of'a similar character in which' the operating mechanism is mounted on thecover and requires to be removedv therewith after being disconnectedfrom the driven shaft.

.With the above ends inview my invention consists in the particularconstruction and combination of the parts, including certain details ofconstruction, all .ofwhich willbe I hereinafter described, andspecifically re- -ferred to -in the claims forming a part of thisspecification.

By practical test it has-been found that the ordinary ratehet-and-pa'wlmechanism' forsecuring a force feed in dope-cups iails to perform apositive or l'regular action by reason of the rapid movementofthe partsoften causing the ,pawl toslip over the teeth of the ratchet-wheelquiteL as often" as it catches. By the particular construction andarrangementof lthe parts of myinventionl` provide a reducing-gear forrotating the threaded pis-v ton-rod of the dope-cup that is positive andregular in its operation, themeehamsm. be-

ing simple and compactand not liable to gein out of order.

VIn the accompanying drawings, forming part of this'- specification,Figure 1 is'a'front anism therefor constructed in-accordance the cup tothe parts to be lubricated. The upper part of the sha-nk A', adjoiningthe bot annular bearing-surface a' and a collar f12 above the same.

Inclosing the cup A, but out of Contact ecives the shank A' and engagesthe bearingsurfaee a', being held in such engagement by frame orcastin-g'which .supports a part of the gear mechanism and is secured tothe in termediate portion of the shank A'.

The Icasing'l is provided-at. its lower en with a circumferential angeb, having internal gear-'teeth which mesh with the gear mechanism,hereinafter described, to revolve the upper open ends of the-cup Aandcasing flange of which is provided at opposingsides withinwardly-projecting lugs c, that `engage the said cover in place,th eslotsbeing properly arranged with respect to the direction of ro-.gagement of theparts at all times. To' the @enterjof the' cover' C isrigidlyecured a elevation of *a dope-eupand operating mechwith myinvention. Fig. 2 isa side elevation.

a modification showing they manner of driv? man-head. S or. othersupport, the said s hankhaving anertrcal openin g a, which leads fromv Atherewith, is a casingB, the bottom of which is provided with an axialopening which re-` said casing about the stationary cup A. Over B isplaced a cover or cap C, the depending angular slots b in the rim'oflthe'casing to hold" .tation of the casing to insure the proper-em.

pistonfrod E, which depends into the :cup A;

By-'re'ference to the drawings, A designates tom of the cup A, isenlarged to provide an IOO and is threaded nearly its whole length, a reduced portion e being provided at its lower end, beyond which is a heador stop e'. The

. pistoni-rod can be secured to'the coveriu any suitable manner, but, asshown, the said cover has an ornamental knob with a central'bore inwhich the'upper end of the piston-rod ts and is held by a transverse piue3. Upon'this piston-rod is mounted a disk or piston F, having an axialthreaded opening through which the rod passes, said disk or pistonfitting snugly within thecup A to frictionally engage the inner sidethereof andprevent rota'- tion, depending wingsf being-also provided ifor this purpose by entering the thick grease. G designates the frame orcasting, which is provided with an enlarged portion' having a verticalopening to`receive thel shank A', to

which it is secured by a set-screw g.

member` provided with a longitudinalbore in which is placed a shaft H,having a worm h fformed on its inner end,'said Worm meshingWitlra'ge'ar-wheel 1, carrying a pinionI I', the latter being inmesh-with the internal teeth lof the casingB. Theg'ear-wheel lis letinto an enlarged portion of the frame or casting. G, and theverticalshaft fi, upon which the .gear-wheel andpinion are mounted, has a,bearingA at its lower end in said frame and at 4its upper end bears -ina plate or arm K, mountedV u'ponthe shank A' and interposed between theenlarged portion of thefraine G and collar that .forms thebearing-surface a" hereinbefore referred, to'.- A straight edge isformed at. the .rearend of the arm K toen; .gage a .lug or projectiong', which-holds'said arm'in its proper relative position.v To the outerendof the shaft H is'keyed a diskL, inclosed within a t\vo .partcasiug'M, Vsaid casing having a .ball-bearing upon the shaft andprovided with an inwardly-project ing ange m', fitting within anannularrecess in the'outer'end ofthe Ahorizontal portion of 4 the' frame G,'Fig` 3. This casingis enlarged to V'oneside of the disk L, and this'enlarged portion is provided with a series of recesses m', eachcontaining aroller N, adapted-to engage the' periphery of the saiddiskL.- The' re- 'cesses are practieallywedge-shaped,as shown so thatwhen ,the .casing )I is moved in one direction the rollers will Wedge'between the tof.

disk L and Wall ,at-the narrow endfofthe 'recesses to lock the partstogetherby frictio'nal contact,;and, conversely', when the'casin'g'v ismoved in the Opposite direction-tl1e'rol1ers= willj'shiftto the enlargedportion of thel r ecessesand permit the parts to move fre'ey one, uponthe other. In'order to insure the proper frietional engagement of therollers, they are actuated toward the smaller ends of the recesses'm/by' means of springs n. This arrangement pro- Y, vides afriction-clutch by which theshaft H will be rotated when the casing Misoscillated or. turned back andlforth. and in order to nre,-

This vframe lorl casting also presents a horizontal vent a. backwardrotation@ sai'dsfiaftva spring-actuated'pawl o is provided which eu vgages ratchet-teeth h'., formed on said shaft'.ll

The pawl consists of a spring-plate secured lto the frame Gand having aset-screw o for l adjusting thetension.

The casing M is provided with a .proiectionl' lm2', havingja squareopening in which fits they bent end of a,bifurcated arm P, the partsbcing rigidlysecured to each. other by'a set? screw p. As shown in Figs.1 and 2:0f the drawings, this bifurcated arm Vis engaged by v y a stud'r'of a plate R," adjustably secured to the end 'of vthe pitman--pin orwrist-pin s,

whereas in Fig. 6 themeans` for oscillating,

the arm consists of a to the shaft-T.'v l

stud or cam t, secured From the foregoingdescription', in connectionwith theaccompa'nying drawings, the operation of the device will bereadily ,understood, for when-the arm P is osci11ated,"ei'ther bythemeans shown in'Fgs. 1 and 2 or that shown in Fig. 6, azrotation willbe ,imparted to the shaft H 'through the friction-clutch and such motioncommunica-ted to the casing B through the intervention of the gearwheelI and pinion I', the particular style of gearing causin g the casing Bto be;rotated at a comparatively-- vdw rate Vtdi? speed, and as thethreaded piston-rod Erotates with said casing B it'will act to pressthe' disk or pistoni? down upon the dope or grease and force the samethrough the feed-opening 'a onto the .bearings to be lubricated..l 4Then the disk or piston is Vmoved to the 4bottom ofthe cup, it will restuponlthe' head'- orV stop e out of engagement with `the threads. Inrefilling ing the cover the disk or piston is Screwed upon the rod tothe,upper part thereof before repla'cingsaidl cover.

'It will be noted that the device is very sim-- ple, cheap,'andeiective,and by the particu- Ywith respect thereto and provided with ade-.

pending ange' having gear-teeth, a'cover secured to the casing and.having a threaded rod'which depends into the cup, a disk or IOO `the cupAl it -is only necessary to unlock the y c over C fromthecasng B-,z andafter remov-v piston in engagement with the threaded rod,

and `gearing ing, substan ally as shown and for the purpose set forth.

'tniechanisin for rotating the casanism for rotating the casing,substantiallyA -as shown and for the purpose set forth. lo

2. In a dope-cup or automatic; lubricator,

the combination with the cup which contains the dope. or lubricant, ofra 'casing' rotatable with respect thereto, a threaded rod carried by thecasing and located within the cup, a

disk or piston havinga threaded 'aperture inI engagement with thethreaded rod, and mech- In a dope-cup or automatic lubricator,

' .the combination with the cup and rotatable casing, of a rod carriedby the rotatable casing and located within the cup, said rod being.threaded fora greater part of its length and provided Vat its lower endwith a reduced portion and head or stop; together with a disk .or pistonhaving a threaded aperture in en-y gagement with thethreaded portion ofthe threaded rod secured to the cover to depend v rod, substantially asshown vand for the purpose set forth. l

4. In a dope-cup or automatielubrieator, the combination with the.cup-which contains .the dope or lubricant, 'of a casing rotatable withrespect thereto,a removable cover placed 1n lockedA engagementwith theLeasing, a

within the cup, a disk or piston mounted upon the threaded portion ofthe rod'andin frictional engagement with the cup, together withmechanism for rotatingthecasing, substantially as shown andv for thepurpose set forth. v a

5.- In a dope-cup or automatic lubricator, the combination with the cupwhich contains the dope or lubricant, of a casing rotatable with respectthereto and provided at its upper-open end with angular slots, a coverhav.- ing studs which engage said slots, athreaded rod secured to thecover to depend within the cup,1.an d a disk or piston mounted uponthethreaded portion of .the rod; 'together with Vmechanism for rotatingthec'asing, substan'- tially'as shown and for thepurpose set forth. i

6. In a dope-cup or automaticlubricator, the combination with-the cupwhich contains the dopeor lubricant, of a casing .rotatablewith respectthereto, a cover removably attached to the upper end of the casing andhaving a' central recess, a 'threaded rod` let into said lrecess andsecured therein byla transverse pin, said -rod depending into the or.vpiston mounted. on- .the-

cup, and 'a disk threaded portion of the rod, substantially'as shown anddescribed.

7. In adope-up or autolnatic lu-bricator,4

the combination with the cup which contains the dope or-lubricant, of. acasing rotatable with respect thereto and carryinga threaded rod uponvwhich is mounted la disk or piston located within the cup, said lcasinghaving gear-teeth, a shaft geared tothe rotatable casin g substantiallyas shown, a disk mounted'on said shaft,`an'd 'a casinginelo'sing thedisk` and provided' with wedgefsha'ped recesses containing rollers whichengage the .periphery of the disk, together'with means which' is.mounted a for oscillating the easing, substantially as shown and forthe purpose -set forth.

8. In a dope-cup or automatic lubricatOr, v

the combination with the cup-- whiehcontains the dope or lubricant, of acasingrotatable with respect thereto and carrying means forforcin'g thedope or lubricant out of thecup through a feed-opening therein, saidcasing .having lgear-teeth, la shaft geared to the rota-table casingsubstantially as shown, a disk mounted on said shaft, andfriction-clutch mechanism in engagement with said disk and operated from-a suitable power, substantially as described. f

9; In adope-cup or automatic lubricator, the combination with the cupwhich contains the dope or grease, of a easing rotatable with l. respectthereto and carrying means for forcing the dope or lubricant out of the.cup

through a feed-opening therein, said casing having gear-teeth, a shaftgeared to the .rotatable easing substantially as shown, and a Idiskkeyed upon 'the shaft; together 'with a .ico

through a feed-opening therein, said casing having gearteeth,ja s haftgeared to the rotatable veasing substantially. as shown, andafriction-clutch rotating the Ashaft, said friction clutch having adepending arm; togetherA with a ca'm on a rotaryfshaft, for oscil-ylating said arm, substantially as set forth.

l 1l. In a dope-cup or automatiiJ lubricator,

the combination with the cup. which contains the dope or lubricant, of acasing rotatable lwith respect thereto and carrying means sub-fstant'ially as shown for forcing the dope or lubricant out ofvafeedopening therein,

said' casing having gear-teeth, a shaft having a worm, a worm-wheel inmesh with said worm 'and carrying apinion in mesh with the gear-teeth ofthe rotatable casing; together IIO Awith 'a pawl and ratchet inengagement with the shaft,.and a friction-clutch mounted on ,the shaft,said friction-clutch having an arm which lis oscillated from a rotaryshaft, for

the purpose set forth.

` 12; Ina dope-cup or automatic lubricator, the combination. of a cuphavinga shank se-v cured'to.a suitable.support, a rotatable casing.inclosing the'cup..and bearingon the shank, saidcasinghaving gear-teethand a removable-cover carrying a threaded rod on disk or piston locatedwithin the cup; a frameGr secured to an intermedia'te portion-ref .theshank. a vshaft n'wunted in the frame and geared to the casing Intestimony whereof I affix nu'fs'ignatm-e throughl the intervention of aWorm --xvheel in presence of two witnesses.

and pinion, `a. paw-1 in engagement with ratchet-teethon the shaft;together with a friction-clutch on the shaft and provided Vitxless'es:with an' arm oseillated from :t suitable power, MARY KENNY substantiallyas shown and described. \VM. G. GAGE.

MARK E.' STOVER.

